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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 602 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.21.4 ÷ 1000 =
  2. 2.45.19 ÷ 100 =
  3. 3.24.69 × 100 =
  4. 4.213.9 × 10 =
  5. 5.163.3 × 1000 =
  6. 6.23.28 × 100 =
  7. 7.0.39 ÷ 100 =
  8. 8.155.4 × 10 =
  9. 9.104.1 × 100 =
  10. 10.200.6 × 10 =
  11. 11.88.5 × 10 =
  12. 12.404.2 × 100 =
  13. 13.35.22 × 100 =
  14. 14.154.5 ÷ 100 =
  15. 15.1.77 × 1000 =
  16. 16.43.38 ÷ 1000 =
  17. 17.1.79 × 10 =
  18. 18.450.7 × 100 =
  19. 19.150.1 ÷ 10 =
  20. 20.4.89 ÷ 1000 =
  21. 21.110.8 ÷ 100 =
  22. 22.21.67 ÷ 100 =
  23. 23.250.5 × 100 =
  24. 24.36.97 × 100 =
  25. 25.139.4 ÷ 10 =
  26. 26.14.91 × 10 =
  27. 27.107.3 ÷ 100 =
  28. 28.40.31 ÷ 1000 =
  29. 29.229.9 ÷ 100 =
  30. 30.374.8 × 100 =
  31. 31.352.5 ÷ 100 =
  32. 32.34.68 × 100 =
  33. 33.244.1 ÷ 10 =
  34. 34.82.9 × 100 =
  35. 35.305.1 × 10 =
  36. 36.220.1 × 10 =
  37. 37.78.3 × 1000 =
  38. 38.39.6 ÷ 100 =
  39. 39.326.6 × 100 =
  40. 40.319.2 × 1000 =

Answer key

  1. 0.0214
  2. 0.4519
  3. 2469
  4. 2139
  5. 163300
  6. 2328
  7. 0.0039
  8. 1554
  9. 10410
  10. 2006
  11. 885
  12. 40420
  13. 3522
  14. 1.545
  15. 1770
  16. 0.04338
  17. 17.9
  18. 45070
  19. 15.01
  20. 0.00489
  21. 1.108
  22. 0.2167
  23. 25050
  24. 3697
  25. 13.94
  26. 149.1
  27. 1.073
  28. 0.04031
  29. 2.299
  30. 37480
  31. 3.525
  32. 3468
  33. 24.41
  34. 8290
  35. 3051
  36. 2201
  37. 78300
  38. 0.396
  39. 32660
  40. 319200

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